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// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
#include "go_asm.h"
#include "textflag.h"
TEXT ·IndexByte<ABIInternal>(SB),NOSPLIT,$0-40
// X10 = b_base
// X11 = b_len
// X12 = b_cap (unused)
// X13 = byte to find
AND $0xff, X13
MOV X10, X12 // store base for later
ADD X10, X11 // end
SUB $1, X10
loop:
ADD $1, X10
BEQ X10, X11, notfound
MOVBU (X10), X14
BNE X13, X14, loop
SUB X12, X10 // remove base
RET
notfound:
MOV $-1, X10
RET
TEXT ·IndexByteString<ABIInternal>(SB),NOSPLIT,$0-32
// X10 = b_base
// X11 = b_len
// X12 = byte to find
AND $0xff, X12
MOV X10, X13 // store base for later
ADD X10, X11 // end
SUB $1, X10
loop:
ADD $1, X10
BEQ X10, X11, notfound
MOVBU (X10), X14
BNE X12, X14, loop
SUB X13, X10 // remove base
RET
notfound:
MOV $-1, X10
RET
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